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Printers / Scanners & Supplies > 
Laser Printers > 
Oki Data > 
Item#: 9SIA25V1R61036

OKIDATA MB491 MFP MFC / All-In-One Up to 42 ppm Monochrome Laser Printer

  • Up to 42 ppm
  • 1200 x 1200 dpi Black Print Quality
  • Ethernet 10/100BaseTX (RJ-45)
  • Up to 80,000 pages monthly
  • Duplex printing
  • 50 Sheet Reversing ADF
  • Pin It
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Learn more about the Oki Data MB491 MFP

Cartridges Compatible

Cartridges Compatible


Recommended Use
MFC / All-In-One
16.8" x 16.7" x 17.9"
44.09 lbs.


Output Type
Laser Technology
Black Print Speed
Up to 42 ppm
Black Print Quality
1200 x 1200 dpi
Time To First Page (seconds)
5 sec.
Duplex printing
Max. Duty Cycle
Up to 80,000 pages monthly


Copy Speed, Black
Up to 40 cpm
Copy Speed, Color
Up to 40 cpm
Copy Quality, Black
600 x 600 dpi
Copy Quality, Color
600 x 600 dpi
Max. Document Enlargement
Max. Document Reduction
Max. Number of Copies


Scan Element
Scan Resolution, Optical
600 dpi


Fax Memory
4 MB
Modem Speed

Media Handling

Input Capacity, std.
250 sheets + 100-sheet Multipurpose Feeder; RADF - 50 sheets
Input Capacity, max.
880 sheets, 10 envelopes
Media sizes supported
Letter, Legal 14"/13.5"/13", Executive, Statement, A4, A5, A6, B5 (JIS)


USB Ports
Network Ports
Ethernet 10/100BaseTX (RJ-45)

Hardware SPEC

Noise Level (Approx.)
Operating (Printing/Scanning/Copying) 55dB(A) or less; Standby 30dB(A)
Power Consumption
Idle: 80W
Max: 950W
Typical: 610W
Power Save: <14W
Sleep: <3W
Power Off: <0.5W


Windows Compatible
Windows 7 (32/64-bit), Vista (32/64-bit), XP (32/64 bit), Server 2008 (32/64-bit), Server 2008 R2 (64-bit), Server 2003 (32/64-bit)
Macintosh Compatible
Mac OS X 10.4.0 - 10.7.2


Versatile and reliable

Compact design, ideal for small office or small workgroup

Duplex (2-sided) printing/copying standard

Multi-tasking functionality standard, enabling two tasks to be performed at once

Color scanning with send-to functionality

Document management through Nuance PaperPort, OCR with Nuance OmniPage

Operator panel with backlit 3.5" LCD display, 1-touch function buttons, alphanumeric keypad

50-sheet reversing automatic document feeder (RADF - scans both sides)

ENERGY STAR compliant

Upgradable paper capacity with 530-sheet second tray

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Oki Data MB491 MFP

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  • Yasha S.
  • 1/14/2014 8:17:38 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

3 out of 5 eggsBeware: NO WIRELESS CARD

Pros: Great device. It is one of the best printers I have ever owned as of this moment. I am in law school, and I print high quantities of various document/cases on a regular basis and this print speed/scanning is top notch and beats anything I have ever owned.

Cons: Does not have a wireless card and cannot achieve network connectivity without a wireless-card or external wireless print server. I would assume that a piece of equipment this advanced with its vast multitasking capabilities would have wireless functionality as well. However, I spent about 2 hours trying to configure it to my home network only to realize that it had no wireless card. So in my opinion, it vastly decreases its value being that I have to now buy an external adapter. So take into account the price to functionality ratio before purchasing. It is a much better deal than any other printer that prints at speeds of 42ppm.

Other Thoughts: Should have been clearly marked as having no wireless networking capabilities. It is misleading not to make it clear on such a high-tech printer.

0 out of 1 people found this review helpful. Did you? Yes No

  • Louis Y.
  • 9/24/2013 8:56:54 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsUpdated description

Pros: Runs all day every day. Good quality print.

Cons: Newegg updated the description to now say "Monochrome" printer. They originally called it a "Color" printer. It does fax and scan in color, if that helps.
If the power goes out, beware that when the printer comes back on, the TCP/IP address might have changed. You might need to check the machines printout for it's configuration. It causes all networked workstations to loose connectivity until the address is corrected on either the printer, or on all workstations.

Other Thoughts: Reasonably economical on toner usage. Good workhorse for small to medium sized business environments.

Did you find this review helpful? Yes No

  • Louis Y.
  • 11/17/2012 7:08:36 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGood -BUT!!

Pros: Fast, good quality print, does it all

Cons: Be careful - this printer only PRINTS IN MONO (Black & White). It Scans and Faxes in color. Took off one EGG because of it not doing what I expected. Not really the products fault, but as you will notice it is advertised as a "Color Laser Printer" which it really is not.

Other Thoughts: MY bad. I didn't read the description page closely enough, and what I thought was supposed to be a workgroup COLOR LASER PRINTER, turns out to be only a MONO LASER PRINTER. It works just as advertised, but maybe NEWEGG should not label it as a "42 ppm Color Laser Printer" since it does not PRINT in COLOR.

1 out of 1 people found this review helpful. Did you? Yes No

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Home > 
Computer Hardware > 
Printers / Scanners & Supplies > 
Laser Printers > 
Oki Data > 
Item#: 9SIA25V1R61036
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